The Line of the Vouga, originally known like Line of the Valley of the Vouga, is a railroad Portuguese piece of junk, which ties the Line of the North, in Thorn, to the Line of the Dão, in Viseu, in an extension of 140 km, and which makes a junction, in Sernada of the Vouga, with the Branch of Aveiro; it was inaugurated totally in 5 of February of 1914
Initially, the compositions used in this line were composed by locomotives the traction to steam and carriages and wooden carriages. After the reopening of the Line of the Vouga, all the services started to be secured for automotoras of metric gage. In this line I circulated the Series 50, 9300, 9400 and 9630; at present, only the automotoras of these last series circulate in this line